restricted stock units vest or will instead be deferred, on a mandatory basis or at the participant's election, in a manner intended to comply with Section 409A of the Code.
Other Stock or Cash Based Awards. Other stock or cash based awards are awards of cash, fully vested shares and other awards valued wholly or partially by referring to, or otherwise based on, shares. Other stock or cash based awards may be granted to participants and may also be available as a payment form in the settlement of other awards, as standalone payments and as payment in lieu of compensation otherwise payable to any individual who is eligible to receive awards. The plan administrator will determine the terms and conditions of other stock or cash based awards, including any purchase price, performance goals (which may be based on performance criteria), transfer restrictions and vesting conditions.
Awards granted under the 2018 Plan may include awards that are subject to performance-based vesting or other performance conditions. For purposes of the 2018 Plan, one or more of the following performance criteria (or such other criteria as the plan administrator may determine) may be used in setting performance goals: net earnings (either before or after interest, taxes, depreciation and amortization), sales or revenue, net income (either before or after taxes), operating earnings or other measures of profitability (including earnings before any or all of interest, taxes, depreciation, amortization and exploration expense), cash flow (including, but not limited to, operating cash flow and free cash flow), return on net assets, return on stockholders' equity, return on assets, return on capital, return on sales, gross or net margin, expenses or expense levels, total shareholder return, internal rate of return (IRR), financial ratios (including those measuring liquidity, activity, profitability or leverage), working capital, earnings per Share, price per Share, market capitalization, any GAAP financial performance measures, inventory management, measures related to A/R balance and write-offs, timeliness and/or accuracy of business reporting, approval or implementation of strategic plans, financing and other capital raising transactions, debt levels or reductions, cash levels, acquisition and/or disposition activity, investment sourcing activity, marketing initiatives, projects or processes, achievement of customer satisfaction objectives, net asset value, net asset value per share, capital expenditures, net borrowing, debt leverage levels, credit quality or debt ratings, economic value added, individual business objectives, growth in production, added reserves, growth in reserves, production replacement, inventory growth, environmental health and/or safety performance, effectiveness of hedging programs, improvements in internal controls and policies, efficiency or productivity measures such as annual or multi-year average finding costs, absolute or per unit operating and maintenance costs, lease operating expenses, inside-lease operating expenses, operating and maintenance expense per decatherm or customer or fuel gas reimbursement percentage and retention and recruitment of employees, any of which may be measured in absolute terms or as compared to any incremental increase or decrease. Such performance goals also may be based solely by reference to the Company's performance or the performance of a subsidiary, division, business segment or business unit of the Company or a subsidiary, or based upon performance relative to performance of other companies or upon comparisons of any of the indicators of performance relative to performance of other companies. The 2018 Plan also permits the plan administrator to provide for adjustments to the applicable performance criteria.
Prohibition on Repricing
Under the 2018 Plan, the plan administrator may not, without the approval of the Company's stockholders, authorize the repricing of any outstanding option or stock appreciation right to reduce its price per share, cancel any option or stock appreciation right in exchange for cash or another award when the price per share exceeds the fair market value of the underlying shares, or take any other action with respect to an option or stock appreciation right that the Company determines would be treated as a repricing under the rules and regulations of the principal U.S. stock exchange on which the shares are listed.
The plan administrator has broad discretion to take action under the 2018 Plan, as well as make adjustments to the terms and conditions of existing and future awards, to prevent the dilution or enlargement of intended benefits and facilitate necessary or desirable changes in the event of certain transactions and events affecting the Company's shares, such as dividends or other distributions (whether in the form of cash, shares, other securities, or other property), reorganizations, mergers, consolidations, change in control events and other corporate transactions. In